Technical Details:

• Language: Python
• Framework: Flask
• Libraries: Flask-SQLAlchemy, Flask-Login, Flask-Bcrypt, Flask-WTF, WTForms
• Database: SQLite (`market.db`)
• Concepts: Web Development, Flask, Authentication, Session Management, CRUD, SQLAlchemy, Form Handling
• Features: User Authentication: User registration with password hashing using `generate_password_hash()`, User login with password verification using `check_password_hash()`, User logout, and User authentication and session management with Flask-Login, Item Management: Displays a list of available items on the market page, allows users to purchase items (simulated), allows users to sell items back to the market (simulated), Displays item details (ID, name, barcode, price, description, owner), and Provides More Info and Purchase buttons for each item, and Uses modals to display item details and confirm purchase/sell actions, User Budget: Tracks each user's budget and Deducts the item price from the user's budget when an item is purchased, and Adds the item price to the user's budget when an item is sold, Form Handling: Uses Flask-WTF and WTForms to create and validate forms for registration, login, purchasing, and selling items, Styling: Uses Bootstrap for basic styling and layout, Dynamic Content: Uses Jinja2 templating to dynamically render content based on database data and user authentication status, Error Handling: Includes basic error handling and displays flash messages to the user (e.g., for incorrect login credentials, insufficient funds, etc.)